Samsung unveils sleek new Galaxy phones to take on Apple

By Se Young Lee SEOUL/BARCELONA (Reuters) - Samsung Electronics Co Ltd unveiled its latest Galaxy S smartphones featuring a slim body made from aircraft-grade metal, in a bid to reclaim its throne as undisputed global smartphone leader from Apple Inc. Designed from scratch in an operation dubbed "Project Zero", the Galaxy S6 and its curved-edges variant are critical for Samsung's plans to reverse plunging smartphone revenues that led to its first annual earnings fall in three year